bailey



2 Sheets-Sheet 1.

(No Model.)

J. J. BAILEY. AMMONIA GAS COMPRESSOR.

(No Model.) 2 sheets Shet 2.

J. J. BAILEY. AMMONIA GAS COMPRESSOR.

No. 599,487. Patented Feb. 22,1898.

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JOHN J. BAILEY, OF NEW YORK, N. Y.

AMMONlA GAS COMPRESSOR.

SPECIFICATION forming part of Letters Patent No. 599,487, dated February 22, 1898.

Application filed January 12,1897. Serial No. 618,942. (No model.)

To d/ZZ whom, it may concern:

Be it known that 1, JOHN J. BAILEY, a citizen of the United States, residing at New York, in the county and State of New York, have invented a new and useful Improvement in Ammonia-Gas Compressors, of which the following is a specification.

My present invention is designed as an improvement upon the device described and shown in my application for patent filed August 27, 1896, Serial No. 604,055; and the object of my invention is to more quickly and effectuallycool the piston cylinders and valves during the operation of compressing the anhydrous ammonia or other gas and to so construct such valves that their operation will be more positive and certain and more perfectly gas-tight.

In carrying out my invention and in com bination with the essential features of my hereinbefore-named application I construct the circular body with channels for cooling liquid that extend between the piston-cylinders, and whose respective ends open into the spaces between the valve-cases and the covers thereto. The cooling-water enters at the bottom of the circular body and flows around through these channels and over the valve cases in succession and away at the bottom portion, thus keeping the body, the pistoncylinders, and the valves and cases cool with a liberal supply of water. The valves at the outer ends of the piston-cylinders are alike and their construction and operation are hereinafter more particularly described.

In the drawings, Figure 1 is an elevation and partial section illustrating my improved apparatus; Fig. 2 is a cross-section through part of the body of the machine. Fig. 3 is a longitudinal section, in larger size, of the valves and valve-case. Fig. 4 is a plan of the valve-case shown in Fig. 8, and Fig. 5 is a cross-section of one of the valve-case sleeves.

The body A of the machine is approximately circular, and is provided with a central chamber and with four piston-cylinders at right angles to each other. Upon one side of the body the disk a and ring a constitute the heads, and the head Z7 is at the other side of the body and through it the shaft f passes, the same being provided with a crank f and crank-pinf (See dotted lines, Fig. 1.) Two the piston is a half-cylinder, and, as seen in the drawings, the fiat surfaces of the pistons are toward each other. The two yokes are coupled to opposite pistons in pairs and occupy only a space corresponding in Width to the diameter of the circular pistons. A direct and even thrust on the pistons is thus effected and space is economized. The yokes are slotted, as shown, and the ends of the pistons are bolted thereto, so that the pistons are connected in pairs. The crank is pro vided with a sleeve within a slide-block that is in the slots of the yokes. These parts receive motion from the crank and crank-pin, and the parts just described are similar to parts described in my hereinbefore-named application and operate in like manner and do not require further description.

The circular body A is made with channels cl (2" 61 (Z (1 that extend through the body between the piston-cylinders, and the ends open into the respective spaces or chambers between the valve-cases h and their covers 7L2. These channels are preferably rectangular in cross-section.

At the lower part of the circular body A pipes 7t pass through the body into the channels (Z and (Z and between these is a tubular opening 10, communicating with the open center of the body A to convey oil within the body, as in my hereinbefore-named application.

The water to cool the body A, its piston cylinders and Valves, and their cases in the operation of the mechanism enters by the pipe 70 into the channel cl and passes therefrom over one valve-case, through the channel d", over another valve-case, through the channel (1 over another valve-case, through the channel d over another valve-case and into the channel d, and away by the pipe 70. A constant circulation is thus maintained around through the cylindrical body A to cool the same and its valves.

The valve-cases hare each made alike, with two circular chambers opening from the outer ends into the ports 6, and these ports open into the by-passes 3 4. in the body of the machine to convey the ammonia gas. These circular chambers are smaller at the inner ends and larger at the outer ends and the outer ends are threaded.

The valves 25 i seat in opposite directions in the base of the valve-cases h and their stems move in the sleeves t' t" and are provided with cross-pins 7, adapted to move in slots in the opposite portions of the sleeves t' 6. These sleeves it" are provided with flanges fitting the cylindrical openings in the valve-cases, and the insides of said sleeves are longitudinally grooved, as shown in the cross-section, Fig. 5, to lessen friction in the movement of the valve-stems and to provide oil-channels for lubrication. Rings at n surround the sleeves between the respective flanges, the ring a being below the cross-pin in the stem of the valve t and the ring at above the crosspin in the stem ofthe valve 6, and I employ helical springs Z Z, surrounding the sleeves, the spring Z being between the ring it and lower flange of the sleeve 1' and the spring Z between the ring a and upper flange of the sleeve i. The spring Z consequently exerts an upward pressure to keep the valve t to its seat and the spring Z a downward pressure to keep the valve 25 to its seat, the pressure being exerted at one end of the springs upon the rings a n and pins 7. The screw-caps m m fit in the threaded openings of the valvecases and screw down against packing-rings and against the sleeves t' 11 to securely hold the same in place and form gas-tight joints. The valve-cases h are secured to the circular body A by tap-bolts 12 and the covers 77. are secured in place by the tap-bolts 13, as shown in Figs. 1 and 4.

I claim as my invention- 1. In an ammonia-gas compressor, the combination with the pistons, the yokes to which they are coupled, and the shaft and crank for operating the same, of the circular body having cylinders for the pistons and channels that extend around in and through the body between the piston-cylinders and that are rectangular in cross-section and have open ends at opposite sides of the cylinders, and

form receptacles for cooling liquid, and covv bination with the four pistons, the yokes to which they are coupled in pairs and the crank and shaft for operating the same, of the circular body containing the piston-cylinders and having channels that extend around, in and through the body between the piston-cylinders, the valve-cases at. the outer ends of the piston-cylinders and the covers to said cases, the said channels opening near the outer ends of the cylinders into the covers to provide connected channels for a circulation of cooling liquid through the body and around the valve-cases, substantially as set forth.

3. In an ammoniagas compressor, the combination with the body, the cylinders and pistons and means for operating the pistons, of the valve-cases at the outer ends of the piston-cylinders having inlet and exit passages, the valves '25 t seated in opposite directions, sleeves in which the stems of said valves are moved, a cross-pin in each valve-stem, and the helical springs acting against said pins and valves to hold the same to their seats, substantially as specified.

4. In an ammonia-gas compressor, the combination with the body, the cylinders and pistons, and means for operating the pistons, of

the valve-cases at the outer ends of the piston-cylinders having inlet and exit passages, the valves 1, 25' seated in opposite directions, pins 7 in the valve-stems, sleeves I; t" receiving the valve-stems and having flanges and slotted at opposite sides for the pins 7, the rings n n, the helical springs Z Z and the screw-caps m m, substantially as set forth.

5. In an ammonia-gas compressor, the combination with the body, the cylinders and pistons, and means for operating the pistons, of the valve-cases at the outer ends of the piston-cylinders having inlet and exit passages, the valves 15 t seated in opposite directions, pins 7 in the valve-stems, sleeves i t" receiving the valve-stems and having flanges and slotted at opposite sides for the pins 7, and longitudinally grooved internally to reduce the bearing on the valve-stem and provide receptacles for oil, the rings n n, the helical springs Z Z and the screw-caps m m, substantially as set forth.

Signed by me this 4th day of January, 1897.

JOHN J. BAILEY.

Witnesses:

GEO. T. PINCKNEY, HAROLD SERRELL. 

